Paris: Gauthier-Villars, 1921. 1st French. FRENCH TRANSLATIONS of this “popular” exposition of the theory of relativity, The Theory of Restricted and General Relativity. Also included is Einstein's Relativity and the Space Problem. CONDITION & DETAILS: 1954. Paris, Gauthier-Villars, 1954. Ex-libris from The Franklin Institute with no spine markings. Rebacked with..... More

Leipzig: Johann Ambrosius Barth, 1918. 1st Edition. FIRST EDITION OF EINSTEIN’S DISCUSSION OF MACH’S PRINCIPLE, a theory Einstein names and one which was historically important to the inspiration that would lead to general relativity. Mach’s principle states that “local physical laws are determined by the large-scale structure of the universe”..... More

Leipzig: Barth, 1907. 1st Edition. FIRST EDITION OF EINSTEIN’S 1st STATEMENT OF THE FULL EQUIVALENCE OF MASS AND ENERGY AND THE EQUATION E = MC² (written as µ = E/V²). In ‘On the Inertia of Energy Required by the Relativity Principle’ (pp. 371-384), “Einstein discussed the relationship between inertial mass..... More

Lancaster: American Institute of Physics, 1932. 1st Edition. BOUND FIRST EDITION OF AN IMPORTANT EXPERIMENTAL TEST OF THE LORENZ-EINSTEIN TRANSFORMATIONS DESIGNED TO DEMONSTRATE MOTION-INDUCED TIME DILATION. Kennedy and Thorndike “considered the mathematical treatment originally applied to the Michelson-Morley experiment to see if there was a way to.. discriminate between Lorentz..... More

Leipzig: Barth, 1916. 1st Edition. FIRST EDITION, OFFPRINT IN ORIGINAL PAPER WRAPS OF THE FIRST SOLUTION OF EINSTEIN’S EQUATION FOR THE METRIC OF A CHARGED POINT MASS. Überreicht vom Verfasser’ (Presented by the Author) appears in print on the front wrap. Hans Jacob Reissner, a German aeronautical engineer with a...... More

FIRST EDITION OF THE FIRST DISCOVERY OF GRAVITATIONAL WAVES IN THE BINARY PULSAR – the gravitational waves Einstein predicted in his 1916 theory of general relativity. This is the first proof that “radiation leaves the system of a binary pulsar at exactly the speed of light and as gravitational waves”..... More